LVS Series VCO Design Packs

The prototype LVS series VCO supplied in the Design Pack is packaged identically to the VCO pictured.

The LVS Series are high performance Voltage Controlled Oscillator designs featuring:

very low phase noise (as low as -120dBc/Hz at 10kHz)

linear tuning over majority of frequency range

constant power output

These designs employ LC resonators and active biasing. All components used are available in tape and reel format suitable for automated surface mount manufacture.

Key performance data are summarised in the following table:

Model	Nominal Frequency Range (MHz)	Nominal Power Output (dBm)	Tuning Sensitivity (MHz/V)	Phase Noise at 10kHz (dBc/Hz)
LVS400	400 - 490	6	7	-120
LVS500	470 - 560	6	9	-118

LVS Series Common Characteristics
Supply Voltage	9 volts
Supply Current	22mA (nom)
PCB Area	17.5mm x 17.5mm

LVS Series Technology Summary (see individual datasheets for further details)
Resonator	Coilcraft 'Mini Spring' inductor
Resistors	0603 metal film
Capacitors	0603 NPO ceramic 0603 X7R ceramic 1mF Tantalum
Inductors	0805 RFC (decoupling only)
Semiconductors RF Transistor Varactor diodes AF Transistor (bias cct)	SOT123 (Philips/Siemens etc.) SOD323 (Philips) SOT123 (Philips/Motorola etc.)
Notes: All components are available from multiple sources except the Coilcraft "Mini Spring" inductor and the Philips varactor diodes

LVS Design Pack Contents
Item	Details
Design Report	Datasheet Schematic Brief design description Parts List Hard Copy of PCB Layout
PCB Layout on disk	Formats provided: Protel PCB Gerber DXF
Prototype VCO with test results (T_amb = 25C)	Test Results: Tuning Law Output Power vs Frequency Phase Noise

Purchase of an LVS design pack entitles unlimited usage of that LVS VCO design within one organisation. There are no ongoing royalties. For more details see conditions of sale.

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LVS Series VCO Design Packs

Copyright © 1999 - 2010 Applied Radio Labs Last modified: February 07, 2010